{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T06:04:26Z","timestamp":1785305066975,"version":"3.55.0"},"reference-count":42,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T00:00:00Z","timestamp":1780617600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T00:00:00Z","timestamp":1780617600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clin Physio Funct Imaging"],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Assessing functional capacity is a key aspect of exercise testing and offers important insights into health in adult populations. However, accurate assessment often requires laboratory\u2010based maximal tests. This pilot study investigated whether a field\u2010based self\u2010paced submaximal stair ascent test could feasibly assess aerobic capacity and lower\u2010limb strength in middle\u2010aged and older adults.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Twenty\u2010eight participants (20 women, 8 men) aged 40 to 70 years completed maximal treadmill and isometric leg press tests to assess maximal oxygen consumption (VO\n                      <jats:sub>2<\/jats:sub>\n                      max) and lower\u2010limb strength, respectively. Participants also performed two separate self\u2010paced stair ascents of four and six flights. Ascent time, mean vertical power, as well as rate of perceived exertion, absolute heart rate, and relative heart rate following the test were recorded.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Ascent time and mean vertical power were associated with VO\n                      <jats:sub>2<\/jats:sub>\n                      max and lower\u2010limb strength, with standardized regression coefficients ranging from \u22120.61 to \u22120.27 and from 0.41 to 0.73, respectively. However, these associations were attenuated and no longer statistically significant after controlling for age and sex. Predictive models based on the two best\u2010performing stair ascent predictors selected by LASSO regression showed weak\u2010to\u2010moderate ability to predict VO\n                      <jats:sub>2<\/jats:sub>\n                      max (\n                      <jats:italic>R<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u2009=\u20090.21\u20130.52) with cross\u2010validated model performance significantly different from zero. In contrast, the models did not significantly predict lower\u2010limb strength.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>These preliminary findings suggest that a brief self\u2010paced stair ascent test may offer a feasible field\u2010based approach for estimating aerobic capacity in middle\u2010aged and older adults. However, its predictive accuracy appears limited and should be further examined in larger samples.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/cpf.70073","type":"journal-article","created":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T07:24:56Z","timestamp":1780644296000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Feasibility of a field\u2010based submaximal stair ascent test for estimating aerobic capacity and lower\u2010limb strength in middle\u2010aged and older adults"],"prefix":"10.1111","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5086-3635","authenticated-orcid":false,"given":"Matti","family":"Hyv\u00e4rinen","sequence":"first","affiliation":[{"name":"Gerontology Research Center, Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niina","family":"Kajan","sequence":"additional","affiliation":[{"name":"Gerontology Research Center, Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eeva","family":"Kettunen","sequence":"additional","affiliation":[{"name":"Gerontology Research Center, Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ari","family":"Lehti\u00f6","sequence":"additional","affiliation":[{"name":"Digital Services, University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jouni","family":"Kallio","sequence":"additional","affiliation":[{"name":"City of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2108-7112","authenticated-orcid":false,"given":"Keegan","family":"Knittle","sequence":"additional","affiliation":[{"name":"Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5332-1188","authenticated-orcid":false,"given":"Neil","family":"Cronin","sequence":"additional","affiliation":[{"name":"Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"},{"name":"School of Education and Science University of Gloucestershire, The Park Cheltenham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura","family":"Karavirta","sequence":"additional","affiliation":[{"name":"Gerontology Research Center, Faculty of Sport and Health Sciences University of Jyv\u00e4skyl\u00e4 Jyv\u00e4skyl\u00e4 Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,5]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.12750"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0b013e31821ece12"},{"key":"e_1_2_9_4_1","volume-title":"ACSM's Guidelines for Exercise Testing and Prescription","author":"American College of Sports Medicine","year":"2021"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1152\/jappl.1954.7.2.218"},{"issue":"6","key":"e_1_2_9_6_1","first-page":"675","article-title":"An experimental study of physical fitness of Air Force personnel","volume":"10","author":"Balke B.","year":"1959","journal-title":"United States Armed Forces Medical Journal"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.2340\/1650197719702239298"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1080\/02640418808729792"},{"key":"e_1_2_9_9_1","doi-asserted-by":"crossref","unstructured":"CantyA.andRipleyB.(2025) Boot: Bootstrap Functions. 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